// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/extensions/theme_installed_infobar_delegate.h"

#include <stddef.h>
#include <string>
#include <utility>

#include "base/memory/ptr_util.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/infobars/confirm_infobar_creator.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/themes/theme_service.h"
#include "chrome/browser/themes/theme_service_factory.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/grit/generated_resources.h"
#include "components/infobars/content/content_infobar_manager.h"
#include "components/infobars/core/infobar.h"
#include "extensions/browser/extension_system.h"
#include "ui/base/l10n/l10n_util.h"

// static
void ThemeInstalledInfoBarDelegate::Create(
    infobars::ContentInfoBarManager* infobar_manager,
    ThemeService* theme_service,
    const std::string& theme_name,
    const std::string& theme_id,
    std::unique_ptr<ThemeService::ThemeReinstaller> prev_theme_reinstaller) {
  // Create the new infobar.
  std::unique_ptr<infobars::InfoBar> new_infobar(
      CreateConfirmInfoBar(base::WrapUnique<ConfirmInfoBarDelegate>(
          new ThemeInstalledInfoBarDelegate(
              theme_service, theme_name, theme_id,
              std::move(prev_theme_reinstaller)))));

  // If there's a previous theme infobar, just replace that instead of adding a
  // new one.
  for (size_t i = 0; i < infobar_manager->infobar_count(); ++i) {
    infobars::InfoBar* old_infobar = infobar_manager->infobar_at(i);
    ThemeInstalledInfoBarDelegate* theme_infobar =
        old_infobar->delegate()->AsThemePreviewInfobarDelegate();
    if (theme_infobar) {
      // If the user installed the same theme twice, ignore the second install
      // and keep the first install info bar, so that they can easily undo to
      // get back the previous theme.
      // |theme_id| is not defined for autogenerated themes, but since those
      // don't show an infobar, it's valid in this case.
      if (theme_infobar->theme_id_ != theme_id) {
        infobar_manager->ReplaceInfoBar(old_infobar, std::move(new_infobar));
      }
      return;
    }
  }
  // No previous theme infobar, so add this.
  infobar_manager->AddInfoBar(std::move(new_infobar));
}

ThemeInstalledInfoBarDelegate::ThemeInstalledInfoBarDelegate(
    ThemeService* theme_service,
    const std::string& theme_name,
    const std::string& theme_id,
    std::unique_ptr<ThemeService::ThemeReinstaller> prev_theme_reinstaller)
    : ConfirmInfoBarDelegate(),
      theme_service_(theme_service),
      theme_name_(theme_name),
      theme_id_(theme_id),
      prev_theme_reinstaller_(std::move(prev_theme_reinstaller)) {
  theme_service_->AddObserver(this);
}

ThemeInstalledInfoBarDelegate::~ThemeInstalledInfoBarDelegate() {
  // We don't want any notifications while we're running our destructor.
  theme_service_->RemoveObserver(this);
}

infobars::InfoBarDelegate::InfoBarIdentifier
ThemeInstalledInfoBarDelegate::GetIdentifier() const {
  return THEME_INSTALLED_INFOBAR_DELEGATE;
}

const gfx::VectorIcon& ThemeInstalledInfoBarDelegate::GetVectorIcon() const {
  return kPaintbrushIcon;
}

ThemeInstalledInfoBarDelegate*
    ThemeInstalledInfoBarDelegate::AsThemePreviewInfobarDelegate() {
  return this;
}

std::u16string ThemeInstalledInfoBarDelegate::GetMessageText() const {
  return l10n_util::GetStringFUTF16(IDS_THEME_INSTALL_INFOBAR_LABEL,
                                    base::UTF8ToUTF16(theme_name_));
}

int ThemeInstalledInfoBarDelegate::GetButtons() const {
  return BUTTON_CANCEL;
}

std::u16string ThemeInstalledInfoBarDelegate::GetButtonLabel(
    InfoBarButton button) const {
  DCHECK_EQ(BUTTON_CANCEL, button);
  return l10n_util::GetStringUTF16(IDS_THEME_INSTALL_INFOBAR_UNDO_BUTTON);
}

bool ThemeInstalledInfoBarDelegate::Cancel() {
  if (prev_theme_reinstaller_)
    prev_theme_reinstaller_->Reinstall();
  return false;  // The theme change will close us.
}

void ThemeInstalledInfoBarDelegate::OnThemeChanged() {
  // If the new theme is different from what this info bar is associated with,
  // close this info bar since it is no longer relevant.
  if (theme_id_ != theme_service_->GetThemeID())
    infobar()->RemoveSelf();
}
